Question:
Consider the complete combustion of butane, the amount of butane utilized to produce $72.0 \mathrm{~g}$ of water is ________$\times 10^{-1} \mathrm{~g}$. (in nearest integer)
Solution:
$\mathrm{C}_{4} \mathrm{H}_{10}+\frac{13}{2} \mathrm{O}_{2} \longrightarrow 4 \mathrm{CO}_{2}+5 \mathrm{H}_{2} \mathrm{O}$
Moles of $\mathrm{H}_{2} \mathrm{O}=\frac{72}{18}=4$
Moles of $\mathrm{C}_{4} \mathrm{H}_{10}$ used $=\frac{1}{5} \times 4$
Weight of $\mathrm{C}_{4} \mathrm{H}_{10}$ used $=\frac{4}{5} \times 58$
$=46.4 \mathrm{gm}$
Comments
Shivgami - May 4, 2022, 5:23 p.m.
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- Exam Pattern
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- Physics
- Kinematics 1D
- Kinemetics 2D
- Friction
- Work, Power, Energy
- Centre of Mass and Collision
- Rotational Dynamics
- Gravitation
- Calorimetry
- Elasticity
- Thermal Expansion
- Heat Transfer
- Kinetic Theory of Gases
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- Wave on String
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- Dual Nature of Matter
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- Error in Measurement & instruments
- Alternating Current
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- Wave Optics
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- Work, Energy and Power
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